Timing device for roll changing apparatus or the like



Feb. 23, 1943. A. J. CLINE 2,311,626

TIMING DEVICE FOR ROLL CHANGING APPARATUS OR THE LIKE Filed July 10,1941 4 Sheets-Sheet l Feb. 23, 1943. A, J, CUNE 2,311,626

TIMING DEVICE FOR ROLL CHANGING APPARATUS OR THE LIKE Filed July 10,1941 4 Sheets-Sheet 2 Feb. 23, 1943. A. J. GLINE 2,311,626

TIMING DEVICE- FOR ROLL CHANGING APPARATUS OR THE LIKE Filed July 10,1941 4 Sheets-Sheet 3 Feb. 23, 1943. A. J. CLINE 2,311,626

TIMING DEVICE FOR ROLL CHANGING APPARATUS OR THE LIKE File-d July 10,1941 4 Sheets-Sheet 4 Lj A QM/Z l b iv :31 EJM M Patented Feb. 23, 1943UNITED STATES PATENT OFFICE TIMING DEVICE FOR ROLL CHANGING APPARATUS ORTHE LIKE 6 Claims.

This invention relates to a timing device whereby the operation of acontrolled mechanism may be definitely related to the rotation or othermovement of a controlling element, a particular adaptation of theinvention being in connection with roll changing apparatus for printingpresses. For this purpose the device may be used to time one or more ofthe operations involved in making a paster between the web of areplacement roll and the web of an expiring roll so that the operationWill be performed when the replacement roll is in a predeterminedangular position in relation to its axis of rotation.

An object of the invention is to provide a magnetic control device,including a magnetic element movable with a certain part of themechanism, such as the spindle of a web roll support, so as to cause acircuit to be closed or opened at a predetermined point in the rotationof said partassuming proper conditions to have been already set uptothereby cause actuation of the controlled mechanism, such as an elementof a paster device of a roll changing apparatus, in properly timedrelationship to the movement of said part of the controlling mechanism.

In the embodiment of the invention hereinafter illustrated the magneticcontrolling device is employed to operate a valve to cause the sprayingof a solvent on a dry adhesive substance on the replacement roll in aroll changing apparatus so that said adhesive is dissolved sufficientlyto cause it to adhere to the web from the expiring roll upon contacttherewith at a predetermined point in the rotation of the replacementroll, the valve being thereby operated in timed relationship to therotation of'the replacement roll.

Other objects and advantages of the invention will become apparent fromthe following detailed description in connection with the accompanyingdrawings, and it will be understood that the preferred embodiment shownis illustrative only, inasmuch as the invention is not limited to use inthe particular type of apparatus shown.

In the drawings:

Fig. 1 is an end elevational view of a web roll changing device in whichmy invention is embodied;

Fig. 2 is an elevational and sectional view of one of the spindlehousings and a magnetic pickup device constructed in accordance with theprinciples of the invention;

Fig. 3 is a detailed sectional view taken substantially on the sectionline 3-3 in Fi 2;

Fig. 4 is a sectional view taken substantially on the line '4-4 in Fig.2;

Fig. 5 is a diagrammatic lever diagram showing certain elements of themagnetic pick-up device and of the switch controlled thereby; and

Fig. 6 is a simplified wiring diagram showing the circuit whereby thespray valve is controlled.

Upon said drawings the reference numeral II indicates a three-arm paperreel mounted for rotation in a press substructure I 2. The arms I3 ofthe reel, which it will be understood are arranged in pairs, one at eachend of the roll to be supported thereby, each have a spindle housing Idat the end thereof in which the spindle I5 is rotatably mounted.

The three paper rolls are indicated by the reference numerals 16, IT.and I8, the roll I6 being one which is nearly exhausted, from which theweb I9 is running to the press, and the rolls l1 and [8 being the firstand second replacement rolls, respectively.

In accordance with the present invention the spindle housing M on one ofthe arms I3 of each pair of such arm-s are formed to receive a rotor 2!(see Fig. 4) fixed to the spindle l5 and carrying a permanent magnet 22which rotates in unison with the web roll which is supported on saidspindle. The housing 14 is cut away tangentially at its outer end andthe opening thus provided is covered by a non-magnetic plate 23 in whichthere are positioned two auxiliary magnetic pole pieces 24, which arelocated on the radius of the spider composed of the arms l3. Between thepoles of the magnet 22 and the magnet pole pieces 24 there is a smallair gap 25 so that these auxiliary pole pieces will serve to concentratethe magnetic lines of force when the magnet 22 is approximately in linewith them, in order to thereby increase the attraction of the magnet onthe co-acting elements of the magnetic pick-up device, which isgenerally indicated by reference numeral 26, said device being supportedby a bracket 21 secured to the underside of the press frame 23 and beingso located that the spindle housings l4 may be positioned immediatelybeneath it by rotation of the reel.

The elements of said magnetic pick-up device 26 are positioned in ahousing which includes a bottom plate 29 of copper or like conductivematerial. Immediately above this plate are two armatures in the form ofplates 3| and 32 which are centrally pivoted at points 33 and 34,respectively, to a supporting frame 35, which is suspended by a spring36 from a cross bar 31 extending between posts 38 and 39 in fixed framemembers 41. The lever 42 is linked between a pivot 43 in one of thefixed frames 4| and a pivot 44 in the floating supporting frame 35, andan operating plunger 45 'of a switch generally indicated by thereference numeral 46 is normally in contact with the upper side of saidlever 42. The upper end of said plunger engages or is secured to aspring member 46' carrying one of the contacts 41' of the switch, andthe strength of the spring 36 is such that said plunger is caused tonormally hold said contact 41 out of engagement with the other contact48 of the switch against the tension of the spring 45'.

When the reel is positioned so that one of the spindle housings I4 isbeneath the magnetic pick-up device 25 and the roll carried by thespindle which is journalled in said housing rotates to the point Wherethe magnet 22 is beneath the magnetic pick-up 25, the armatures 3| and32 will be attracted toward the magnet, thereby moving the supportingframe 35 downwardly against the tension of the spring 36 carrying withit the outer end of the lever 42, thus permitting the plunger 45 to bemoved downwardly by action of the spring 415 and thereby closing thecontacts 41, 48 of the switch. Assuming that a Pastor button has beenpressed by the operator, as will hereinafter appear, this will causeoperation of a spray valve generally indicated in Fig. 1 by thereference numeral 49, causing a solvent to be sprayed onto an adhesivesuch as dry glue indicated by the reference numeral 5!, on the roll, thespray being indicated by the numeral 52. The roll I! at this time hasbeen brought up to desired speed by the means of a roll starting device(not shown) and by action of the web l9 thereon, the direction androtation of the roll, as shown in Fig. 1, being counterclockwise. Whenthe moistened adhesive 5| comes in contact with the web I9, a paster ismade between the leading edge of the web of the new roll and the web l9from the expiring roll, and in a predetermined time thereafter thelatter web is cut off by means of a cutter 53 diagrammaticallyillustrated in Fig, 1 The spray valve 49 is so positioned that the areaof the roll surface on which the adhesive is located moves the greaterpart of one revolution of the roll before coming into contact with theweb l9, thereby allowing sufficient time for the solvent to act upon theadhesive to render it sufiiciently tacky to cause adherence of the webof the new roll to the expiring web when the adhesive contacts thelatter. The timing is such as to cause the spray valve to act at apredetermined time in the rotation of the roll so as to throw the sprayonto the adhesive when the latter arrives at the point indicated in Fig.1.

Thearmature plates 3| and 32 are arranged to engage fixed stops on theframe at both ends of said plates, so that they may fulcrum at eitherend, and the two plates are provided so as to insure the proper action,even though the reel may be stopped in position so that the magnet 22 isnot exactly centered.

As it will later appear, the momentary closing of the switch contacts41, 48 closes the circuit which energizes a relay, which in turn closescontacts to cause operation of the valve 49 which is of the solenoidtype. Upon release of the paster button the circuit is broken, andthereafter the reel is further rotated to position the roll in a runningposition which is the position of the nearly exhausted roll I5 shown inFig. 1.

Referring to the wiring diagram of Fig. 6, the

armatures 31, 32 and the switch 46 of the magnetic pick-up device areshown schematically adjacent the spindle housing !4 of one of the reelarms I3. The positive and negative sides of the supply line are shown at54 and 55, respectively, and the line switch is indicated at 56. Thepaster button above mentioned is identified by the reference numeral 51.When the line switch 55 is closed and the paster button 5'! is pressedby the operator, after the reel has been rotated into position with oneof the spindle housings l4 beneath the pick-up device, the magnet 22,upon coming beneath the armatures 3|, 32 upon the next rotation of theroll, will cause the switch 46 to close, thereby completing a circuitthrough leads 58 and 59 to a relay BI and thence to the negative side 55of the line. The energizing of the relay coil 6! closes a contact 62establishing a holding circuit for the relay, and said relaysimultaneously closes a contact 53 which allows current to flow from thepositive line to a coil 64 of a solenoid type air valve 65, thus liftinga valve member 66 of said Valve and permitting air to flow from an inlet61 to an outlet 68 leading to the head of the spray valve 49. Thiscauses a spray 52 of solvent fluid to be thrown onto the adhesive 5| onthe roll I! in timed relationship to the rotation of the roll, whichresults in the making of a paster as hereinbefore described.

The foregoing description has been given for clearness of understandingonly, and no unnecessary limitations should be understood therefrom.

I claim:

1. In web roll changing apparatus, a roll support including a spindlerotatable with a web roll, a magnet carried by the spindle, an armaturemounted adjacent the roll support in position to be attracted by saidmagnet in a predetermined position of the roll support and at a certainpoint in the rotation of the roll, a paster device for connecting theweb of said roll to the Web of another roll, including an element to beoperated at said point in the rotation of said first-mentioned roll whensaid support is in said predetermined position, and electrical means foroperating said element of said paster device, including a switcharranged to be operated by said armature when the latter is attracted bysaid magnet at said point in the rotation of said first-mentioned roll.

2. In web roll changing apparatus, a roll support including a spindlerotatable with a web roll, a magnet carried by the spindle, an armaturemounted adjacent the roll support in position to be attracted by saidmagnet in a predetermined position of the roll support and at a certainpoint in the rotation of the roll, a paster device for connecting theweb of said roll to the web of another roll, including a spray valve forprojecting a liquid onto said first-mentioned roll in a predeterminedzone to render the sprayed area of said roll sticky, and electricalmeans for causing operation of said spray valve, including a switcharranged to be operated by said armature when the latter is attracted bysaid magnet at said point in the rotation of said roll.

3. A roll changing apparatus for printing presses, comprising a rollsupport for a plurality of web rolls, a paster device for joining theweb of a replacement roll to the web of an exhaust- .ing roll, saiddevice including a spray valve for projecting a fluid onto thereplacement roll in a predetermined zone thereof preparatory to makingthe paster, a magnetic element arranged to rotate with the replacementroll, a second magnetic element positioned to coact with saidfirstmentioned element when the roll support is in a predeterminedposition, electrical means for operating said spray valve, and a switchoperated by one of said magnetic elements when they are brought intocooperative relationship for controlling said electrical means to causeoperation of said valve.

4. In apparatus including a movable member and a device to be operatedin timed relationship to the movement of said member: a magnetic elementcarried by said member, a coacting magnetic element mounted adjacent thepath of movement of said member and in the path of the magnetic lines offorce of said first mentioned magnetic element, and electrical means forcontrolling the operation of said device including a circuit controlleroperable by said magnetic elements when the latter are brought intooperative relationship by the movement of said member, said controllerincluding an armature comprising one of said magnetic elements, asupporting frame for the armature, spring means yieldingly supportingsaid frame, a switch including a spring element tending to close thecontacts of said switch, and means normally resisting such tendency ofsaid spring element, said means being connected to said armature andmovement of said armature under the influence of said first-mentionedmagnetic element causing suflicient movement of said means to permit theclosing of the switch.

5. In web roll changing apparatus, a roll support including a spindlerotatable with a web roll, a housing for said spindle, a magnetincluding a rotatable element carried by the spindle and a stationarypole piece mounted on the spindle housing, an armature mounted adjacentthe roll support in position to be attracted by said magnet in apredetermined position of the roll support and at a certain point in therotation of the roll, a paster device for connecting the web of saidroll to the Web of another roll, including an element to be operated atsaid point in the rotation of said first-mentioned roll when saidsupport is in said predetermined position, and electrical means foroperating said element of said paster device, including a switcharranged to be operated by said armature when the latter is attracted bysaid magnet at said point in the rotation of said first-mentioned roll.

6. In apparatus including a movable member and a device to be operatedin timed relationship to the movement of said member: a magnetic elementcarried by said member, a coacting magnetic element mounted adjacent thepath of movement of said member and in the path of the magnetic lines offorce of said first-mentioned magnetic element, and electrical means forcontrolling the operation of said device including a circuit controlleroperable by said magnetic elements when the latter are brought intooperative relationship by the movement of said member, said controllerincluding a pair of pivoted armatures comprising one of said magneticelements, a supporting frame for the armatures, spring means yieldinglysupporting said frame, a switch includin a spring element tending toclose the contacts of said switch, and means normally resisting suchtendency of said spring element, said means being connected to said pairof armatures, and movement of either of said armatures under theinfluence of said first-mentioned magnetic element causing suflicientmovement of said means to permit the closing of the switch, saidarmatures being spaced in the direction of movement of said movablemember whereby said switch will be operated even though said movablemember should not be exactly located with respect to said stationaryswitch-operating mechanism.

ALLAN J. CLIN'E.

